note 78231 added to function.posix-isatty

I have found this note somewhere in a http://www.phpforumz.info/, and it benefits me... I've found that, at least in recentish versions of PHP (tested 5.1.6 and 5.2.0), using STDIN or STDOUT produces a warning on Linux if you really do have a tty: $ php -r 'echo posix_isatty(STDOUT) ? "tty\n" : "pipe\n";' PHP Warning: posix_isatty(): cannot seek on a pipe in Command line code on ine 1 tty $ php -r 'echo posix_isatty(STDOUT) ? "tty\n" : "pipe\n";' | cat pipe No such warning is displayed on Mac OS X so this may be quirky Linux-specific behavior. You can work around this by using the direct file descriptor numbers, which are theoretically standard: 0 for stdin, 1 for stdout, 2 for stderr: $ php -r 'echo posix_isatty(1) ? "tty\n" : "pipe\n";' tty $ php -r 'echo posix_isatty(1) ? "tty\n" : "pipe\n";' | cat pipe ---- Server IP: 195.54.192.44 Probable Submitter: 193.124.208.85 (proxied: 193.124.208.114) ---- Manual Page -- http://www.php.net/manual/en/function.posix-isatty.php Edit -- https://master.php.net/note/edit/78231 Del: integrated -- https://master.php.net/note/delete/78231/integrated Del: useless -- https://master.php.net/note/delete/78231/useless Del: bad code -- https://master.php.net/note/delete/78231/bad+code Del: spam -- https://master.php.net/note/delete/78231/spam Del: non-english -- https://master.php.net/note/delete/78231/non-english Del: in docs -- https://master.php.net/note/delete/78231/in+docs Del: other reasons-- https://master.php.net/note/delete/78231 Reject -- https://master.php.net/note/reject/78231 Search -- https://master.php.net/manage/user-notes.php